fixes list saving

web/src/lib/components/trail/trail_card.svelte

@@ -197,11 +197,10 @@
                     {/if}
                 </div>
             {/if}
-
             <div class="flex gap-x-4 gap-y-1 text-base flex-wrap">
-                {#if trail.category}
+                {#if trail.expand?.category?.name || trail.category}
                     <p>
-                        <i class="fa fa-shapes mr-3"> </i>{$_(trail.category)}
+                        <i class="fa fa-shapes mr-3"> </i>{$_(trail.expand?.category?.name ?? trail.category ?? "-")}
                     </p>
                 {/if}
                 {#if trail.location}

web/src/lib/components/trail/trail_list_item.svelte

@@ -152,9 +152,9 @@
             </div>
         {/if}
         <div class="flex flex-wrap gap-x-8 gap-y-1">
-            {#if trail.category}
+            {#if trail.expand?.category?.name || trail.category}
                 <p>
-                    <i class="fa fa-shapes mr-3"> </i>{$_(trail.category)}
+                    <i class="fa fa-shapes mr-3"> </i>{$_(trail.expand?.category?.name ?? trail.category ?? "-")}
                 </p>
             {/if}
             {#if trail.location}

web/src/lib/stores/list_store.ts

@@ -95,7 +95,6 @@ export async function lists_show(id: string, handle?: string, f: (url: RequestIn
     for (const trail of response.expand?.trails ?? []) {
         const gpxData: string = await fetchGPX(trail, f);
         trail.expand.gpx_data = gpxData;
-        trail.category = trail.expand?.category?.name ?? "-";
     }
 
     list.set(response);

web/src/lib/vendor/maplibre-layer-manager/maplibre-layer-manager.ts

@@ -88,6 +88,9 @@ export class LayerManager {
 
 
     addLayer(id: string, layer: BaseLayer) {
+        if(!layer.spec) {
+            return;
+        }
         if (this.layers[id] && this.map.getLayer(id)) {
             // update sources and return
             for (const [sourceId, s] of Object.entries(layer.spec.sources)) {